Complex cortical dysplasia with other brain malformations-13 (CDCBM13) is an autosomal dominant neurodevelopmental disorder characterized by global developmental delay and impaired intellectual development. Brain imaging reveals variable neuronal migration defects leading to cortical malformations, including pachygyria. Additional features may include early-onset seizures, dysmorphic features, and signs of peripheral neuropathy like abnormal gait, hyporeflexia, and foot deformities. CDCBM13 is associated with a heterozygous mutation in the DYNC1H1 gene on chromosome 14q32.